SITERWELL Battery Smoke Detector 2 pack

SITERWELL Smoke Detector, 10 Year Smoke Alarm with Photoelectric Sensor, Fire Detector with Low Battery and Fault Warning for House and Bedroom, UL Listed, GS526A, 2 Pack Product details Features： 1.The unit is a photoelectric smoke alarm device. The smoke alarm device does not contain the radioactive material which is harmless to the environment. 2.A built-in CR123A lithium battery provides 10 years life and warns you when the battery is low. 3.In order not to disturb your rest, the product designed function of silence and no disturb. 4.With the increase of working time，the alarm detection signal will be decayed, when attenuate to the certain value, the alarm will send a fault signal, you must replace the product immediately. 5.Product design of the test function by pressing the test button, used to test the product is working normal. A weekly test is required. 10 YEARS LIFE TIME: The smoke alarm can be 10 years life time and has 10 years life time non-repalced battery. You won't worry about replacing the battery any more. And it can save energy and protect environment. PHOTOELECTRIC TECHNOLOGY: The smoke alarm uses a photoelectric sensor to ensure that fire smoke can be detected in advance, giving family more time to escape. Besides, the photoelectric sensor is purer than the ion sensor, and avoids the radiation of the ion sensor.